薄钢板气体射流控冷结构数值模拟与试验验证

doi:10.13251/j.issn.0254-6051.2020.06.050

金属热处理 ›› 2020, Vol. 45 ›› Issue (6): 239-243.DOI: 10.13251/j.issn.0254-6051.2020.06.050

• 数值模拟 • 上一篇

薄钢板气体射流控冷结构数值模拟与试验验证

董承智, 梁校, 李贤君, 杨涛, 侯俊卿, 罗平

北京机电研究所有限公司, 北京 100083

收稿日期:2020-04-30 出版日期:2020-06-25 发布日期:2020-09-02
通讯作者: 李贤君,研究员级高级工程师, E-mail:imlixj@163.com
作者简介:董承智(1996—),男,硕士研究生,主要从事热处理淬火设备方向的研究,E-mail:1003077036@qq.com。
基金资助:
国家重大科技专项(2018ZX04023002)

Numerical simulation and experimental verification of air-jet cooling control structure for steel sheet

Dong Chengzhi, Liang Xiao, Li Xianjun, Yang Tao, Hou Junqing, Luo Ping

Beijing Research Institute of Mechanical & Electrical Technology Ltd., Beijing 100083, China

Received:2020-04-30 Online:2020-06-25 Published:2020-09-02

摘要/Abstract

摘要： 对3种用于薄钢板冷却的气体射流控冷结构进行了数值模拟分析,通过比较气体射流控冷结构内风速流场和钢板温度场,确定单均风板气体射流控冷结构可满足薄钢板淬火要求,且冷却均匀性较好,并进行了试验验证。结果表明:与无均风板相比,设置一个或两个均风板时,工件近壁面风速流场与温度场均匀性得到提高,利用单均风板气体射流控冷结构对钢板进行风冷时,在20 s时工件上存在的最大温度差约为63.8 ℃。在20 s内钢板平均温度从920 ℃冷却至Ms点(412 ℃)以下,最低冷速约为27.2 ℃/s,大于马氏体转变临界冷却速度27 ℃/s,表明单均风板气体射流控冷结构可用于薄钢板气体射流淬火工艺。

关键词: 数值模拟, 气体射流淬火, 薄钢板冷却, 速度场, 温度场

Abstract: Three kinds of air-jet cooling control structure used for thin steel sheet cooling were simulated and analyzed. By comparing the velocity field and steel sheet temperature field in the air-jet cooling structure, it is determined and experimentally verified that the air-jet cooling control structure with single perforated plate can meet the requirements of steel sheet quenching and can obtain good cooling uniformity. The results show that the uniformity of velocity field and temperature field near the workpiece surface is improved when one or two perforated plates are set up compared with that without perforated plate. When the air-jet cooling control structure with single perforated plate is used to cooling the steel sheet, the maximum temperature difference on the workpiece is about 63.8 ℃ in 20 s. In 20 s, the average temperature of steel sheet is cooled from 920 ℃ to below Ms point (412 ℃), and the lowest cooling rate is about 27.2 ℃/s, which is greater than the critical cooling rate of martensitic transformation (27 ℃/s), that is, the air-jet cooling control structure with single perforated plate can be used for air-jet quenching of steel sheet.

Key words: numerical simulation, air-jet quenching, steel sheet cooling, velocity field, temperature field

中图分类号:

TG155.3

董承智, 梁校, 李贤君, 杨涛, 侯俊卿, 罗平. 薄钢板气体射流控冷结构数值模拟与试验验证[J]. 金属热处理, 2020, 45(6): 239-243.

Dong Chengzhi, Liang Xiao, Li Xianjun, Yang Tao, Hou Junqing, Luo Ping. Numerical simulation and experimental verification of air-jet cooling control structure for steel sheet[J]. Heat Treatment of Metals, 2020, 45(6): 239-243.

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薄钢板气体射流控冷结构数值模拟与试验验证

Numerical simulation and experimental verification of air-jet cooling control structure for steel sheet

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